1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2545c321928451f6d0eee61cd3f652a194682622c22b92e970090218856958c9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7544c7d6-9eeb-47ec-ab79-c684f12a815b.json and https://artists.proofprofile.net/proofs/artist/7544c7d6-9eeb-47ec-ab79-c684f12a815b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59329f154bf50f167d8c484cb220e61a7f40a43372b6d86208ae4a87c3bf24f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:06:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFJ2351738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa460ae50d95e0c8c120395ce846db8d10857edf156e87b7cf526672aebfc4f95. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFJ2351739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf845b929ef0f00299f333456dc20fece43871fbf9913e166fd8b50097db734. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFJ2351741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd133a0b0469b66ac1e8e86c31f0766bf21beeb842628a68eed863487e0da70. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFJ2351744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef9b322bd05e4fd0282d7c5137d4f0dae8345455c8ca2ac9c4aecb33d58186e. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFJ2351745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc577baef8e09eca548d4631098a6bb37b5a28be7738d35e9384cec77463480c4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWS2446955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79150ea270cb5da2ab3c45e0840b5de4ce57266e9ca30644982e2492631eb4e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWS2455063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d5a9ae824abab776a3a2572f110003661f38b711e2a25a219cbfd7a5408c02. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:37:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWS2453220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8313b042290f0733e27511d2334e31710ded39ae7824fea49ddc9d1e690bb63e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2428653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea10f388be868471b3e0965c5ac5684c09dba8819387f859109d36bdd5ad6c9. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:51:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB22470946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8906349026b6b160502c18cdaecb727e864ff380a386ca5d80f2770f945e3fbe. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB52432056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4efe3c677e8469b209fe98bb87bd529e3d76384946601b5ebdeeb77586ccd1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB52432061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb540be5cdbd1889db714f382e0e3c8f234259080ef879457b2b405903a39938. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB52432062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c30daedc27c07eed648d2ed397eeeabfcfeef04cb46a78060c06027018f741. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:00:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB52432063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777e3c35f80f42b7114cd106ffe8120cec0d0383cb94ce4e9ebbc69895537a8e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6L2523113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32665cc31998d4c7c4e3e18abddc6f451f3f7211ce509660b8658ceaea3ea08d. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEN2539142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7596668d122a557e43f9a74ac277c73a852c8e3ff7022c5b16d387b40abe00a3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEN2539143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83da729c531af1db1aa042ba0f24fa44a8b6575309d2f5d67f372c1ece70a0f0. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEN2539145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065d84d826689c403afaad0fb0888444f3cdc3dacea533baaac9f4c8f3cce746. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEN2539146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ceb0734fdc2f832cddbb3697cf19396cde5679b7d8936c6a7549e0ec2b6ad1. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEN2539148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ff751754a5f3e703cedf1ed155641e161695512fb61c8b9676866e3c8b6fbd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEN2539150.